WO2011153891A1 - Procédé de transmission de données, station de base et terminal - Google Patents

Procédé de transmission de données, station de base et terminal Download PDF

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Publication number
WO2011153891A1
WO2011153891A1 PCT/CN2011/074030 CN2011074030W WO2011153891A1 WO 2011153891 A1 WO2011153891 A1 WO 2011153891A1 CN 2011074030 W CN2011074030 W CN 2011074030W WO 2011153891 A1 WO2011153891 A1 WO 2011153891A1
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WO
WIPO (PCT)
Prior art keywords
transport block
subframe
multicast service
broadcast multicast
terminal
Prior art date
Application number
PCT/CN2011/074030
Other languages
English (en)
Chinese (zh)
Inventor
阿诺·梅兰
范霄安
赵君辉
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to KR1020137000439A priority Critical patent/KR101478271B1/ko
Publication of WO2011153891A1 publication Critical patent/WO2011153891A1/fr
Priority to US13/707,786 priority patent/US9215688B2/en

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/02—Details
    • H04L12/16—Arrangements for providing special services to substations
    • H04L12/18—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast
    • H04L12/189—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast in combination with wireless systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/30—Resource management for broadcast services
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L51/00—User-to-user messaging in packet-switching networks, transmitted according to store-and-forward or real-time protocols, e.g. e-mail
    • H04L51/58—Message adaptation for wireless communication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal

Definitions

  • the present application claims the priority of the Chinese patent application filed on June 7, 2010 by the Chinese Patent Office, the application number is CN 201010195891.2, and the invention is entitled "data transmission method, base station and terminal".
  • the content is incorporated herein by reference.
  • the present invention relates to the field of data communications technologies, and in particular, to a data transmission method, a base station, and a terminal.
  • MBMS Broadcast Broadcast Multicast Service
  • An evolved NodeB (eNB) simultaneously transmits the same multimedia data to multiple recipients in the network, such as terminals. Compared to single-user transmission, MBMS greatly saves air interface resources.
  • the data transmission method in the prior art mainly includes: acquiring a transport block that needs to be transmitted, and transmitting a transport block to the terminal in each subframe for transmitting the broadcast multicast service.
  • the transport block can be used to carry service data, and the transport block can transmit through the physical layer (Physical)
  • PMCH Multicast Channel
  • the invention provides a data transmission method and a base station and a terminal.
  • n is an integer greater than 1, and the transport blocks corresponding to the same broadcast multicast service occupy the same time slot in each subframe, and each transport block in the subframe corresponds to a unique transport block number.
  • the embodiment of the invention further provides a data transmission method, including:
  • the required broadcast multicast service data is obtained from the transport block corresponding to the transport block number according to the size of each transport block in the subframe.
  • the embodiment of the invention further provides a base station, including:
  • a data sending unit configured to send, to each terminal, n transport blocks in a subframe for transmitting a broadcast multicast service, where n is an integer greater than 1, and a transport block corresponding to the same broadcast multicast service is in each subframe.
  • the occupied time slots are the same, and each transport block in the subframe corresponds to a unique transport block number;
  • the correspondence sending unit is configured to send, to the terminal, a correspondence between a broadcast multicast service corresponding to each transport block in the subframe and a transport block number of each transport block in the subframe.
  • the embodiment of the invention further provides a terminal, including:
  • a first obtaining unit configured to obtain a size of each transport block in a subframe for transmitting a broadcast multicast service
  • a correspondence obtaining unit configured to obtain a broadcast multicast service and a transport block of each transport block in the subframe Correspondence between numbers
  • a number obtaining unit configured to obtain, according to the correspondence, a transport block number corresponding to the required broadcast multicast service
  • the service data acquiring unit obtains broadcast multicast service data from the transport block corresponding to the transport block number according to the size of each transport block in the subframe.
  • each transport block transmitted in the subframe may correspond to different MBMS, thereby realizing in one subframe. Transmitting multiple transport blocks corresponding to MBMS can improve the spectral efficiency of data transmission.
  • FIG. 1 is a flowchart of a data transmission method according to Embodiment 1 of the present invention.
  • FIG. 2 is a flowchart of a data transmission method according to Embodiment 2 of the present invention.
  • Embodiment 3 is a flowchart of a data transmission method according to Embodiment 3 of the present invention.
  • Embodiment 4 is a flowchart of a data transmission method according to Embodiment 4 of the present invention.
  • 5 is a flowchart of a data transmission method according to Embodiment 5 of the present invention
  • 6 is a flowchart of a data transmission method according to Embodiment 6 of the present invention
  • Embodiment 7 is a flowchart of a data transmission method according to Embodiment 7 of the present invention.
  • Embodiment 8 is a schematic structural diagram of a base station according to Embodiment 8 of the present invention.
  • FIG. 9 is a schematic structural diagram of a terminal according to Embodiment 9 of the present invention.
  • FIG. 10 is a schematic structural diagram of a data transmission system according to Embodiment 10 of the present invention.
  • the embodiments of the present invention will be described clearly and completely in conjunction with the drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of them. An embodiment. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.
  • the invention provides a data transmission method and a base station and a terminal. In order to better understand the technical scheme of the present invention, the embodiments provided by the present invention will be described in detail below with reference to the accompanying drawings. Referring to FIG. 1, FIG.
  • Embodiment 1 is a flowchart of a data transmission method according to Embodiment 1 of the present invention.
  • the base station needs to send a plurality of MBMS service data to the terminal.
  • the data transmission method provided by the first embodiment of the present invention mainly includes:
  • Al in each subframe used for transmitting the broadcast multicast service, sends n transport blocks to the terminal, where n is an integer greater than 1, and the transport blocks corresponding to the same broadcast multicast service occupy the same time slot in each subframe.
  • Each transport block within a subframe corresponds to a unique transport block number.
  • the base station may acquire a transport block that needs to be sent to the terminal, and then send n transport blocks to the terminal in each subframe for transmitting the broadcast multicast service, where n is an integer greater than 1, and corresponds to the same broadcast multicast service.
  • the transport block occupies the same slot in each subframe, and each transport block in the subframe corresponds to a unique transport block number.
  • the transport block carries the service data of the MBMS that needs to be transmitted.
  • the base station may acquire the transport block from the base station itself, or may acquire the transport block from other network elements.
  • A2 The terminal sends a correspondence between the broadcast multicast service corresponding to each transport block in the subframe and the transport block number of each transport block in the subframe. Specifically, the base station may send, to the terminal, a correspondence between the broadcast multicast service corresponding to each transport block in the subframe and the transport block number of each transport block in the subframe. It should be noted that the order of execution of A1 and A2 is not inevitable, and the order of transmission of the transport block and the corresponding relationship does not constitute a limitation on the embodiment of the present invention.
  • FIG. 2 is a flowchart of a data transmission method according to Embodiment 2 of the present invention.
  • the base station needs to send the service data of the multiple MBMSs to the terminal.
  • the data transmission method provided by the second embodiment of the present invention mainly includes: b. acquiring a transport block that needs to be transmitted.
  • the base station obtains a transport block that needs to be transmitted, and the transport block can correspond to different broadcast multicast services, and different broadcast multicast services can correspond to different service numbers.
  • the transport block carries the service data of the MBMS to be transmitted.
  • the base station may acquire the transport block from the base station itself, or may acquire the transport block from other network elements.
  • B2 Send n transport blocks to the terminal in each subframe for transmitting the broadcast multicast service, where n is an integer greater than 1, and the transport blocks corresponding to the same broadcast multicast service occupy the same time slot in each subframe.
  • Each transport block within a subframe corresponds to a unique transport block number.
  • the base station may send n transport blocks to the terminal in each subframe for transmitting the broadcast multicast service, where n is an integer greater than 1.
  • the plurality of transport blocks transmitted in the subframe respectively correspond to different broadcast multicast services, and when the base station sends the transport block, the time slot corresponding to the transport block of the same broadcast multicast service is occupied in each subframe. the same.
  • the transport block also corresponds to a transport block number, and each transport block in the subframe corresponds to a unique transport block number.
  • the base station may obtain a correspondence between a broadcast multicast service corresponding to each transport block and a transport block number of the transport block, and then pass the radio resource control (Radio Resource). Control, RC)
  • Radio Resource Radio Resource
  • the layer signaling or medium access control cell sends the correspondence to the terminal.
  • there is no necessary sequence for obtaining the correspondence relationship and obtaining the transport block and there is no necessary execution order between B3 and steps B1 and B2.
  • the base station can receive the transmission of other network elements before sending the transport block.
  • the information acquires the above correspondence, and then sends the acquired correspondence to the terminal.
  • the base station may also first acquire the transport block that needs to be transmitted, send the transport block in the subframe, and then acquire and send the corresponding relationship after the transmission is completed.
  • two or more transport blocks are sent to the terminal in each time slot, and the multiple transport blocks transmitted in the subframe respectively correspond to different MBMSs.
  • the embodiment of the present invention can transmit multiple transport blocks corresponding to MBMS in one subframe, which can improve the spectrum efficiency of data transmission.
  • the RRC layer signaling may be an MBMS Control Channel (MCCH) message or a System Information Block Typel (SIB13) message.
  • the base station may send an MCCH message to the terminal, where the MCCH message carries the correspondence.
  • this embodiment adds a field for indicating the transport block number in the MCCH message.
  • the field is an integer variable transport block index or code in the TMGI IE, and the value is 1 to 6. Any integer between.
  • the media access control information element may be a Multicast Channel Scheduling Information (MSI) or other message.
  • MSI Multicast Channel Scheduling Information
  • the base station may send the multicast channel scheduling information to the terminal, where the multicast channel scheduling information carries the corresponding relationship.
  • the format of multicast channel scheduling information can be as shown in Table 1 below:
  • Transport block number (MTCH1)
  • Transport block number (MTCH2)
  • the transport block number field is a new field, and MTCHn is used to distinguish different MBMS services.
  • the LCID field indicates the logical channel identifier, and the Stop MTCH field has a total of 11 bits, indicating the MCH subframe allocation mode (MCH). Subframe Allocation Pattern, MSAP) The end subframe of the internal MTCH.
  • the terminal may obtain the transport block number corresponding to the broadcast multicast service that needs to be received according to the corresponding relationship, and then query the preset system bandwidth and the number of transport blocks included in the subframe, n, and the number of resource blocks in each transport block.
  • the number of each transport block is obtained, and finally the MBMS data is obtained from the transport block corresponding to the transport block number according to the number n of transport blocks in the subframe and the size of each transport block.
  • FIG. 3 is a flowchart of a data transmission method according to Embodiment 3 of the present invention.
  • the data transmission method provided in Embodiment 3 of the present invention includes:
  • C2 Send n transport blocks to the terminal in each subframe for transmitting the broadcast multicast service, where n is an integer greater than 1, and the transport block corresponding to the same broadcast multicast service has the same time slot occupied in each subframe.
  • n is an integer greater than 1
  • the transport block corresponding to the same broadcast multicast service has the same time slot occupied in each subframe.
  • Each transport block within a subframe corresponds to a unique transport block number.
  • the execution process of the steps C1-C3 is similar to the execution process of the step B1-B3 in the second embodiment of the data transmission method, and the description is not repeated here.
  • the embodiment of the present invention may send n to the terminal by using RRC layer signaling.
  • the RRC layer signaling may be an SIB 13 message or an MCCH message.
  • the base station can send the transport block, n and the corresponding relationship to the terminal at the same time, and the specific sending sequence does not limit the embodiment of the present invention.
  • the terminal may obtain the transport block number corresponding to the broadcast multicast service that needs to be received according to the corresponding relationship, and then calculate the number of resource blocks included in each transport block in the subframe, and further obtain each resource block according to the number of resource blocks in each transport block.
  • the size of the transport block, and finally the MBMS data is obtained from the transport block corresponding to the transport block number according to the number n of transport blocks in the subframe and the size of each transport block.
  • two or more data blocks are transmitted in one subframe, and multiple transport blocks transmitted in the subframe respectively correspond to different MBMSs.
  • the embodiment of the present invention can improve the service data sent in one subframe correspondingly, thereby improving the spectrum efficiency when transmitting the MBMS service data.
  • FIG. 4 is a flowchart of a data transmission method according to Embodiment 4 of the present invention.
  • the data transmission method provided in Embodiment 4 of the present invention includes:
  • Dl Obtain a transport block to be transmitted, and transmit the number of transport blocks included in the subframe of the broadcast multicast service and the size of each transport block.
  • the base station acquires a transport block that needs to be transmitted, and transmits the number of transport blocks included in the subframe of the broadcast multicast service and the size of each transport block.
  • D2 Send n transport blocks to the terminal in each subframe for transmitting the broadcast multicast service, where n is an integer greater than 1, and the transport block corresponding to the same broadcast multicast service has the same time slot occupied in each subframe.
  • n is an integer greater than 1
  • the transport block corresponding to the same broadcast multicast service has the same time slot occupied in each subframe.
  • Each transport block within a subframe corresponds to a unique transport block number.
  • the execution process of the step D2-D3 is the same as the execution process of the step B2-B3 in the first embodiment of the data transmission method, and the description is not repeated here.
  • the embodiment of the present invention may send, by using RRC layer signaling, the number of transport blocks included in the subframe and the size of each transport block to the terminal.
  • the R C layer signaling may be an SIB13 message or an MCCH message.
  • the base station can simultaneously transmit the transport block, n, the size of each transport block, and the corresponding relationship to the terminal, and the specific transmission sequence does not constitute a limitation on the embodiment of the present invention.
  • the terminal may obtain the transport block number corresponding to the broadcast multicast service that needs to be received according to the correspondence, and then obtain the MBMS data from the transport block corresponding to the transport block number according to the number n of transport blocks in the subframe and the size of each transport block.
  • two or more data blocks are transmitted in one subframe, and multiple transport blocks transmitted in the subframe respectively correspond to different MBMSs.
  • the embodiment of the present invention can improve the service data sent in one subframe correspondingly, thereby improving the spectrum efficiency when transmitting the MBMS service data.
  • FIG. 5 is a flowchart of a data transmission method according to Embodiment 5 of the present invention.
  • the data transmission method provided in Embodiment 5 of the present invention includes:
  • the base station can acquire the transport block that needs to be transmitted, and the number of resource blocks that each transport block includes.
  • the number of resource blocks included in each transport block may be determined by physical layer characteristics of the base station. For example, the system bandwidth is 20 MHz, and the resource block (RB) included in each transport block can be 15.
  • the base station can obtain the number of resource blocks included in the transport block and the transport block from the base station itself, for example, from the configuration information of the operation and management (OAM) of the base station.
  • the base station can also obtain the transport block and the number of resource blocks included in the transport block from other network elements, such as Multi-cell/multicast Coordination Entity (MCE).
  • MCE Multi-cell/multicast Coordination Entity
  • E2 Send n transport blocks to the terminal in each subframe for transmitting the broadcast multicast service, where n is an integer greater than 1, and the transport block corresponding to the same broadcast multicast service has the same time slot occupied in each subframe.
  • n is an integer greater than 1
  • the transport block corresponding to the same broadcast multicast service has the same time slot occupied in each subframe.
  • Each transport block within a subframe corresponds to a unique transport block number.
  • E3 Obtain a correspondence between a broadcast multicast service corresponding to each transport block and a transport block number of the transport block, and send the correspondence to the terminal.
  • the execution process of the step E2-E3 is the same as the execution process of the step C2-C3 in the second embodiment of the data transmission method, and the description is not repeated here.
  • the base station may send, by using RRC layer signaling, the number of resource blocks and n of each transport block to the terminal.
  • the R C layer signaling may be an SIB13 message or an MCCH message.
  • the base station can simultaneously send the transport block to the terminal, n, the number of resource blocks included in each transport block, and the corresponding relationship.
  • the specific sending sequence does not limit the embodiment of the present invention.
  • the terminal may obtain the transport block number corresponding to the broadcast multicast service that needs to be received according to the corresponding relationship, and then obtain the size of each transport block in the subframe according to the number of resource blocks included in each transport block, according to the intra-subframe transmission.
  • the number n of blocks and the size of each transport block acquire MBMS data from the transport block corresponding to the transport block number.
  • two or more data blocks are transmitted in one subframe, and multiple transport blocks transmitted in the subframe respectively correspond to different MBMSs.
  • the embodiment of the present invention can improve the service data sent in one subframe correspondingly, thereby improving the spectrum efficiency when transmitting the MBMS service data.
  • FIG. 6 is a flowchart of a data transmission method according to Embodiment 6 of the present invention.
  • the data transmission method provided in Embodiment 6 of the present invention includes:
  • n transport blocks to the terminal in each subframe for transmitting the broadcast multicast service, where n is an integer greater than 1, and the transport block corresponding to the same broadcast multicast service has the same time slot occupied in each subframe.
  • Each transport block within a subframe corresponds to a unique transport block number.
  • the execution process of the steps F1-F4 is the same as the execution process of the steps E1-E4 in the fourth embodiment of the data transmission method, and the description is not repeated here.
  • F5. Obtain a modulation coding mode subscript corresponding to each transport block, and use a modulation coding mode subscript to identify a modulation coding mode corresponding to the transmission block, and send a modulation coding mode subscript to the terminal.
  • the size of each resource block in the transport block is different, and the base station may obtain a modulation and coding mode subscript (MCS Index, I MCS ) of each transport block, and the modulation and coding mode subscript is used for identification.
  • MCS Index MCS Index
  • the base station may send the modulation and coding mode subscript to the terminal by using the RRC layer signaling.
  • the modulation coding mode corresponding to each transport block may be determined by the physical layer characteristics of the base station, and the base station may obtain the modulation coding mode subscript corresponding to each transport block according to the characteristics of the physical layer of the base station.
  • the RRC layer signaling can be a SIB13 or MCCH message.
  • the terminal After obtaining the number of resource blocks included in each transport block and the modulation coding mode subscript of the transport block, the terminal obtains the corresponding transport block according to the number of RBs included in each transport block and the corresponding relationship between the modulation and coding mode subscript search presets. the size of.
  • the terminal may obtain the transport block number corresponding to the broadcast multicast service that needs to be received according to the correspondence, and then obtain the MBMS data from the transport block corresponding to the transport block number according to the number n of transport blocks in the subframe and the size of each transport block.
  • two or more data blocks are transmitted in one subframe, and multiple transport blocks transmitted in the subframe respectively correspond to different MBMSs.
  • the embodiment of the present invention can improve the service data sent in one subframe correspondingly, thereby improving the spectrum efficiency when transmitting the MBMS service data, and the embodiment of the present invention can simultaneously send multiple MBMS services to the terminal.
  • Data can adapt to more application scenarios.
  • the embodiment of the present invention may also use an application scenario in which the size of the resource blocks included in the transport block is not equal.
  • the base station may not transmit n to the terminal.
  • the acquiring, by the base station, the transport block may include: the base station receiving the transport block from the core network or other device, or the base station itself generating the transport block.
  • Multicast One or more of the correspondence between the service or broadcast multicast service and the transport block number of the transport block corresponding to the broadcast multicast service, and the modulation and coding mode subscript of the transport block may come from the MCE, such as MCE.
  • One or more of the above information obtained by the base station may also be generated or configured by the base station itself.
  • the information obtained by the foregoing base station may be sent to the terminal by using multiple messages or one message, where the base station sends the foregoing information without an inevitable sequence, and there is no necessary sequence with the sending of the transport block.
  • the MBMS scheduling message carries one or more of the following scheduling information:
  • the MBMS gateway on the network side may send the coordinated scheduling information to the Mobility Management Entity (MME) by using an existing message or a new message, and the MME sends the information to the Mobility Management Entity (MME) by using an existing message or a new message.
  • the MCE then sends the scheduling information to the eNB by the MCE using existing messages, such as MBMS Scheduling messages or new messages.
  • the embodiment of the invention can ensure that the same MBMS service is synchronously transmitted in the entire MBMS multi-cell synchronous transmission area.
  • the data transmission method provided by the embodiment of the present invention is described above from the side of the base station.
  • the data transmission method provided by the embodiment of the present invention is described below from the terminal side.
  • FIG. 7 is a flowchart of a data transmission method according to Embodiment 7 of the present invention.
  • the data transmission method provided in Embodiment 7 of the present invention mainly includes:
  • Gl Obtain a size of each transport block included in a subframe in which the broadcast multicast service is transmitted.
  • the terminal can obtain the size of each transport block in the subframe in which the broadcast multicast service is transmitted.
  • G2 Obtain a correspondence between a broadcast multicast service and a transport block number of a transport block in a subframe.
  • the terminal can obtain a correspondence between the broadcast multicast service and the transport block number of the intra-subframe transport block that transmits the broadcast multicast service.
  • the terminal may receive a message sent by the base station, for example, an SIB13 or an MCCH message in the RRC layer signaling, where the message carries the correspondence.
  • the terminal may also receive an MCH scheduling message or other message in the media access control cell sent by the base station, where the MCH scheduling message carries the correspondence.
  • the terminal can freely select the MBMS data to be received, so the terminal obtains the transport block number corresponding to the broadcast multicast service that needs to be received according to the foregoing correspondence.
  • G4 Obtain broadcast multicast service data from the transport block corresponding to the transport block number according to the size of each transport block in the subframe.
  • the terminal may obtain the MBMS data from the transport block corresponding to the transport block number according to the size of the transport block.
  • the terminal reads the MBMS data carried in the transport block with the number of 3 and the size of 17 RB from the data transmitted by the network side. .
  • the data in one frame received by the terminal includes two or more transport blocks, and the terminal according to the number of transport blocks received in one frame and the transport block.
  • the size gets the business data from the received transport block.
  • the service data received by the terminal in one frame time is increased, so that the spectrum efficiency of data transmission can be improved.
  • the size of each transport block in the subframe obtained by the terminal may be as follows:
  • the terminal may obtain the number of resource blocks included in each transport block in the subframe in which the MBMS is transmitted according to the correspondence between the preset system bandwidth check and the number of resource blocks included in each transport block according to the current system bandwidth query.
  • the size of each transport block is then obtained based on the number of resource blocks contained in each transport block.
  • the terminal may also obtain the number n of transport blocks included in the subframe in which the MBMS is transmitted according to the current system bandwidth query preset system bandwidth check and the correspondence between the number of intra-subframe transmission blocks transmitted in the MBMS.
  • the terminal acquires the required broadcast multicast service data from the transport block corresponding to the transport block number according to the size of each transport block in n and the sub-frame.
  • the base station does not need to send n to the terminal through the message and the number of resource blocks included in the transport block.
  • the number of corresponding transport blocks in each system bandwidth and the number of resource blocks included in each transport block can be solidified in the media access sublayer or the physical layer by hardware coding, that is, the corresponding relationship is cured.
  • ⁇ 20MHz bandwidth Corresponds to 100 RBs (resource block) and 6 transport blocks, of which 5 TBs each account for 17 RBs and the other TB occupies 15 RBs.
  • 5MH bandwidth Corresponds to 25 RBs and 2 TBs, of which 1 TB each occupies 13 RBs and the other TB occupies 12 RBs. • Below 5MH bandwidth: Corresponds to one TB.
  • the terminal receives a message sent by the base station, for example, a System Information Block Type 13 or MCCH message in the RRC layer signaling, where the message carries the number n of transport blocks contained in the subframe in which the MBMS is transmitted and the size of each transport block.
  • a message sent by the base station for example, a System Information Block Type 13 or MCCH message in the RRC layer signaling, where the message carries the number n of transport blocks contained in the subframe in which the MBMS is transmitted and the size of each transport block.
  • the terminal receives a message carrying n and the size of each transport block, and obtains the number n of transport blocks and the size of each transport block included in each subframe for transmitting the MBMS according to the message.
  • the terminal receives the message sent by the base station, for example, the System Information Block Type 13 or the MCCH message in the RRC layer signaling, where the message carries the number n of the transport blocks included in the subframe for transmitting the MBMS, and the calculation obtains the sub- The size of each transport block within the frame.
  • the base station for example, the System Information Block Type 13 or the MCCH message in the RRC layer signaling, where the message carries the number n of the transport blocks included in the subframe for transmitting the MBMS, and the calculation obtains the sub- The size of each transport block within the frame.
  • the terminal may obtain the number n of transport blocks included in the subframe according to the received message, and then calculate the number of resource blocks included in each transport block.
  • the subscript of the first RB of the first TB 0
  • the subscript of the first RB of the i-th TB is obtained by calculation.
  • An optional calculation formula is: , if 0 ⁇ i ⁇ (N° odN TB )
  • N TB is the number of transport blocks transmitted in a subframe for transmitting MBMS services
  • ' RB is the total number of resource blocks in a subframe for transmitting MBMS services.
  • the terminal uses the subscript of the first resource block in the latter transport block minus the subscript of the first resource block of the previous transport block to obtain the number of resource blocks included in each transport block, and then according to each transport block The number of resource blocks included in the block to get the size of each transport block.
  • the terminal may first calculate that the subscripts of the first RB of each transport block are: 0. 17, 34, 51, 68, 84, and further calculated that the number of RBs included in each transport block is: 17, 17, 17, 17, 16, 16.
  • the size of each resource block is the same, and the terminal can obtain the size of each transport block according to the number of resource blocks included in the transport block and the size of each resource block.
  • the terminal receives a message sent by the base station, for example, a System Information Block Type 13 or an MCCH message in the RRC layer signaling, where the message carries the number n of transport blocks included in each subframe used for transmitting the MBMS, and the calculation obtains the sub- The size of each transport block within the frame.
  • the terminal may query the preset correspondence according to the modulation coding mode subscript obtained by the received message and the calculated number of resource blocks included in each transport block to obtain the size of each transport block.
  • the terminal receives a message sent by the base station, for example, a System Information Block Type 13 or MCCH message in the RRC layer signaling, where the message carries the number n of transport blocks and each transmission included in each subframe used for transmitting the MBMS.
  • the number of resource blocks included in the block, and the size of each transport block is obtained according to the number of resource blocks included in the transport block.
  • the terminal may obtain, according to the received message, the number n of transport blocks included in a subframe of each transport MBMS and the number of resource blocks included in each transport block, and the terminal may use the number of resource blocks included in the transport block and each The size of each resource block is the size of each transport block.
  • the terminal receives a message sent by the base station, for example, a System Information Block Type 13 or an MCCH message in the RRC layer signaling, where the message carries the number n of transport blocks included in the subframe for transmitting the MBMS service, and the transport block includes The number of resource blocks and the modulation coding mode subscript corresponding to the transport block, and the size of each transport block is obtained according to the number of resource blocks included in the transport block and the modulation coding mode corresponding to the transport block.
  • a message sent by the base station for example, a System Information Block Type 13 or an MCCH message in the RRC layer signaling
  • the message carries the number n of transport blocks included in the subframe for transmitting the MBMS service
  • the transport block includes The number of resource blocks and the modulation coding mode subscript corresponding to the transport block, and the size of each transport block is obtained according to the number of resource blocks included in the transport block and the modulation coding mode corresponding to the transport block.
  • the terminal may obtain, from the received message, the number n of transport blocks included in the subframe, the number of resource blocks included in each transport block, and the modulation and coding mode subscript corresponding to the transport block, and then according to each transport block.
  • the corresponding relationship between the number of RBs included and the modulation and coding mode subscript query preset is obtained for each transport block size.
  • the terminal may not acquire the number n of the transport blocks; the message received by the terminal may not include the number n of the intra-subframe transport blocks; the terminal may not transmit the block according to the intra-subframe.
  • the quantity n, the broadcast multicast service data is obtained from the transport block corresponding to the transport block number only according to the size of the transport block.
  • the terminal may receive two or more transport blocks in one subframe, and the multiple transport blocks transmitted in the subframe respectively correspond to different MBMSs.
  • multiple MBMS corresponding transport blocks can be transmitted in one subframe, which can not only improve the spectrum efficiency of data transmission, but also enable the terminal to receive multiple MBMS service data at the same time, which can adapt to more application scenarios.
  • the manner in which the terminal obtains the size of each transport block in the subframe includes two cases:
  • Each resource block in the transport block is equal in size.
  • the terminal obtains the number of resource blocks included in the transport block, and then multiplies the number of the included resource blocks by the size of the resource block to obtain the size of the transport block, for example, the manner of obtaining the size of each transport block in the subframe 1), 3), 4) And 5).
  • each resource block in the transport block is not equal.
  • the terminal After obtaining the number of resource blocks included in the transport block, the terminal also needs to obtain the modulation coding mode subscript of each transport block.
  • the base station may send the RRC layer signaling that carries the modulation coding mode subscript of each transport block to the terminal, and the terminal acquires the modulation coding mode subscript according to the received signaling, and then according to the quantity and modulation of the resource blocks included in the transport block.
  • the correspondence between the encoding mode and the subscript query preset is obtained by the size of each transport block. For example, in the above manner of obtaining the size of each transport block in the subframe 2), it should be noted that the above methods 1), 3), 4) and 5) can also adopt the method of obtaining the size of the transport block provided by the method b.
  • FIG. 8 is a schematic structural diagram of a base station according to Embodiment 8 of the present invention.
  • the base station provided in Embodiment 8 of the present invention includes:
  • the data sending unit 210 is configured to send n transport blocks to the terminal in each subframe for transmitting the broadcast multicast service, where n is an integer greater than 1, and the transport block corresponding to the same broadcast multicast service is occupied in each subframe.
  • the time slots are the same, and each transport block in the subframe corresponds to a unique transport block number;
  • the correspondence sending unit 220 is configured to send, to the terminal, a correspondence between a broadcast multicast service corresponding to each transport block in the subframe and a transport block number of each transport block in the subframe.
  • the base station provided by the embodiment of the present invention can be used in the foregoing first embodiment of the corresponding data transmission method.
  • the base station provided in Embodiment 7 of the present invention may further include:
  • the first sending unit 230 is configured to: n, the size of each transport block in the sub-frame, the number of resource blocks included in each transport block in the sub-frame, and the modulation coding mode corresponding to the transport block, and the modulation coding mode subscript Any one or more pieces of information for identifying a modulation and coding mode corresponding to the transport block are sent to the terminal.
  • the embodiment of the present invention increases the number of the transport blocks included in the subframe in which the MBMS is transmitted, the size of each transport block, or the modulation and coding mode corresponding to each transport block, etc., by adding the first sending unit 230.
  • the information is sent to the terminal.
  • the base station embodiment may be used in the foregoing second, third, fourth, fifth and sixth embodiments of the data transmission method. For the specific data transmission process, reference may be made to the foregoing data transmission method embodiment.
  • the base station provided by the embodiment of the present invention may further include:
  • the information obtaining unit 240 is configured to acquire information sent to the terminal from the MCE or generate or configure information sent to the terminal.
  • FIG. 9 is a schematic structural diagram of a terminal according to Embodiment 9 of the present invention.
  • the terminal provided in Embodiment 9 of the present invention mainly includes:
  • a first obtaining unit 510 configured to obtain a size of each transport block included in a subframe in which the broadcast multicast service is transmitted
  • a correspondence obtaining unit 520 configured to obtain a broadcast multicast service and a transport block of each transport block in the subframe Correspondence between numbers
  • the number obtaining unit 530 is configured to obtain a transport block number corresponding to the required broadcast multicast service according to the corresponding relationship.
  • the service data acquiring unit 540 obtains the transport block corresponding to the transport block number according to the size of each transport block in the subframe. Required broadcast multicast service data.
  • the terminal provided in Embodiment 9 of the present invention can be used in the foregoing fifth embodiment of the corresponding data transmission method.
  • the first obtaining unit 510 may be further configured to obtain the number n of transport blocks included in the subframe in which the broadcast multicast service is transmitted; the service data obtaining unit 540 may further be configured to use the number n of transport blocks in the subframe and each transmission.
  • the size of the block acquires the required broadcast multicast service data from the transport block corresponding to the transport block number.
  • the corresponding relationship obtaining unit 520 in the terminal may include: a message receiving module 521, configured to receive an RC layer signaling or a medium access control cell, an RC layer signaling, or a media connection sent by the base station. Corresponding relationship between the transport block numbers of the transport blocks corresponding to the broadcast multicast service and the broadcast multicast service;
  • the obtaining module 522 is configured to obtain, according to the R C layer signaling or the medium access control information, a correspondence between the broadcast multicast service and the transport block number of the transport block corresponding to the broadcast multicast service.
  • FIG. 10 is a schematic structural diagram of a data transmission system according to Embodiment 10 of the present invention.
  • the embodiment of the invention further provides a data transmission system, comprising: a base station 610 and a terminal 620.
  • a data transmission system comprising: a base station 610 and a terminal 620.
  • the computer readable storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM), or a random access memory (RAM).
  • the data transmission method provided by the present invention and the base station and the terminal for implementing the method are described in detail. For those skilled in the art, according to the idea of the embodiment of the present invention, the specific implementation manner and the application range may be changed. The contents of this specification are not to be construed as limiting the invention.

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Multimedia (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente invention concerne un procédé de transmission de données, une station de base et un terminal. Le procédé comprend les étapes suivantes : envoyer n blocs de transport (TB) à des terminaux dans chaque sous-trame utilisée pour transmettre un service de diffusion/multidiffusion multimédia (MBMS) et envoyer à des terminaux la correspondance entre le MBMS correspondant à chaque TB dans la sous-trame et le numéro de série TB de chaque TB dans la sous-trame ; n étant un entier supérieur à un, les intervalles de temps occupés dans chaque sous-trame par les TB correspondant au même MBMS étant les mêmes, et chaque TB dans la sous-trame correspondant à un numéro de série TB unique. La présente invention peut envoyer deux TB ou plus au terminal dans chaque sous-trame, et les TB transmis dans la sous-trame peuvent correspondre à différents MBMS, réalisant ainsi la transmission de TB correspondant à une pluralité de MBMS dans une sous-trame et améliorant également l'efficacité du spectre de la transmission des données.
PCT/CN2011/074030 2010-06-07 2011-05-13 Procédé de transmission de données, station de base et terminal WO2011153891A1 (fr)

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US13/707,786 US9215688B2 (en) 2010-06-07 2012-12-07 Data transmission method, base station and terminal

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KR20130045323A (ko) 2013-05-03
CL2012003466A1 (es) 2013-10-04
CN102271308A (zh) 2011-12-07
KR101478271B1 (ko) 2014-12-31
CN102271308B (zh) 2014-11-05
US9215688B2 (en) 2015-12-15

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